As an usability issue, it does matter, unless of course, it's a game that is not played often. You can get away with very strange and annoying things, if it's once only. But if it starts to repeat, than any little annoyance keeps the player away from the game.

“The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson

This game has a lot of bugs that are worse than "go" instead of button or something else. If I remember correctly after restarting with "go" character freezes or something like that. This game was never finished. I intended it to be a lot bigger, but I was too bad of a programmer back then to do big project.